Vol. 12, Issue 12 (2023)

Author(s):
MH Keluskar, AV Mane, AK Shinde, RL Kunkerkar, SV Sawardekar, SD Dodake, SG Bhave, PM Haldankar, BD Wagmode, SB Bhagat and TJ Bedase

Abstract:
The field experiment was laid out with 40 early duration rice germplasms in Split Plot Design with three replications during kharif-2020, kharif-2021, rabi-20-21and rabi-21-22 with the objective to biochemical characterization response of 40 early duration rice genotypes under kharif and different sowing windows during rabi season in Konkan. The results revealed that the rice crop sown during rabi season, S₄ (the 50^th MW) date of sowing recorded significantly maximum carbohydrate content (82.18%) as compared to crop sown during S₂ (48^th MW) and S₃ (50^th MW). Rice variety V₇ i.e. Sahyadri-4 recorded significantly maximum carbohydrate content (83.23%). The rice crop sown during rabi season, S₄ (the 52^th MW) date of sowing recorded significantly maximum protein content (6.27%) as compared to crop sown during S₂ (48^th MW) and S₃ (50^th MW). Rice genotype V₂₈ i.e. IRRI-53 recorded significantly maximum protein content (7.09%) which was at par with V₃₅ i.e. Amb pandhari (7.04%). The rice crop sown during rabi season, S₄ (the 52^th MW) date of sowing recorded significantly maximum nitrate reductase activity 2.131 µmolg^-1 and 2.469 µmolg^-1 at tillering and flowering stage. S₁– kharif season (24^th MW) produced significantly maximum amylose content (22.46%) as compared to other sowing dates of rabi season (8^th MW, 50^th MW,52th MW) S₁– kharif season (24^th MW) produced significantly maximum iron content (8.68ppm) as compared to other sowing dates of rabi season (48^th MW, 50^th MW, 52^th MW). S₁–kharif season (24^th MW) produced significantly maximum iron content (13.1ppm) as compared to other sowing dates of rabi season (48th MW, 50th MW, 52th MW).